The expanded cover image of Nodoka Kiyose's 2002 Cleris (Cloud/Aeris) doujinshi Future VI - which, as the name suggests, is the sixth in a series of doujins that stem from Aeris being revived.

ASwimmingElegy on Tumblr liveblogged some scans with a rough summary here - http://aswimmingelegy.tumblr.com/tagged/MT%20liveblogs%20FUTURE%20VI/chrono